摘要
质子交换膜燃料电池(PEMFC)的效率受燃料电池设计和操作条件等多种因素的影响.文中建立了能够计算PEMFC效率的单电池稳态模型,模型预测的极化曲线与实验结果吻合良好.利用该模型研究了电池工作温度和工作压力对电池效率的影响.计算结果表明,在电池工作温度范围内,提高电池工作温度,有利于提高电池效率,高电流密度电池效率增幅要大;提高阴极和阳极工作压力均有利于电池效率提高,但阴极的工作压力增加对提高电池效率作用明显.
Efficiency of proton exchange membrane fuel cell （PEMFC） stack is affected by many factors, such as stack design and operating conditions. In this paper, a steady-state model of proton exchange membrane fuel cell （PEMFC） was built to analyze the PEMFC efficiency. The polarization curve predicated by the model agreed well with the experimental results. Using the PEMFC steady-state model, the effects of cell temperature and reacting pressures on cell efficiency were numerically investigated. The simulation results indicate that increasing temperature leads to the increase of fuel efficiency in the range of fuel operating temperature, and efficiency of the higher work current increases more rapidly. Increasing the cathode and anode pressure leads to the increase of fuel efficiency, however, it is obvious for the improvement of fuel efficiency by increasing the cathode pressure.
出处
《武汉理工大学学报（交通科学与工程版）》
2009年第5期948-951,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家863计划项目资助(批准号:2006AA11A133)
关键词
质子交换膜燃料电池
电池效率
工作温度
工作压力
proton exchange membrane fuel cell （PEMFC）
fuel efficiency
working temperature
working pressure
作者简介
罗马吉：男，35岁，博士，副教授，主要研究领域为质子交换膜燃料电池水热管理
